Mars mars-17425 Definite Purpose Contactor 40A 24V 2 Pole

Product Description

The MARS mars-17425 is a definite purpose contactor designed for switching motor loads and resistive loads in HVAC and refrigeration equipment. It features a 24 volt AC coil and a 2-pole configuration rated at 40 amps. Definite purpose contactors like this one are purpose-built for specific load types, making them a standard component in compressor and condenser fan motor circuits. Licensed HVAC technicians install and replace these contactors during routine maintenance and equipment repair on residential and light commercial systems.

This contactor is suited for residential and light commercial HVAC applications where a 24 VAC control signal switches high-voltage compressor or fan motor circuits. Typical install scenarios include replacement of failed or pitted contactors in split-system condensing units, heat pumps, and packaged rooftop units. The 2-pole design is the most common configuration found in single-phase compressor circuits, and the 40-amp rating accommodates a wide range of residential compressor loads.

Key Features

• 24 VAC coil voltage for direct interface with standard low-voltage thermostat control circuits
• 40-amp contact rating suitable for single-phase compressor and motor loads
• 2-pole configuration covers both line legs in single-phase applications
• Definite purpose design built for HVAC and refrigeration duty cycles

Compatibility

Designed as an OEM-style replacement definite purpose contactor for residential and light commercial HVAC condensing units and packaged systems requiring a 2-pole, 40-amp, 24 VAC coil contactor.

Installation Notes

Contactor replacement is performed by a licensed HVAC technician. Disconnect and lock out all power to the unit at the disconnect box before removing the existing contactor. Note all existing wire terminations before removal and verify the replacement contactor matches the coil voltage, pole count, and amperage rating of the original. Installed contactors should be inspected for proper seating and secure terminal connections before restoring power.

Technical Specifications

• Coil Voltage: 24 VAC
• Contact Rating: 40 amps
• Number of Poles: 2
• Contactor Type: Definite Purpose

Standard Information

• Brand: MARS
• Manufacturer Part Number: mars-17425